Improvement in trusses



M. M. MACDU N A L D.

Trusses.

N0.154,556 PatentedSept.l,1874.

WITNESSES: lNVEN-TOR;

UNITED STATES PATENT OFFICE.

MANVILL M. MACDONALD, OF SYRACUSE, NEW YORK.

IMPROVEMENT IN TRUSSES.

Specification forming part of Letters Patent No. 154,556, dated September 1,1d74.;""applioation tiled b May 19, 1874.

To all whomit may concern:

Be it known that I, MANVILL M. MACDON- ALI), of Syracuse, Onondaga county, New York, have invented Improvements in Hernia-Trusses and Abdominal Supporters, of which the following is a specification:

My invention consists of coil-wire springs continued into arms or levers, and formed into bows and loops, for attachment of pads by screws and washers, or other fastenings.

The free ends of the coil-wire pass into the holes in the rim of the clamp, with a set-screw for adjustment.

By reference to the drawings, Figure 1 represents the combined truss, which is perfectly adjustable, and graduates the pressure of the springs, and gives uniform central and oscillating action to the .pads and supporter at- .e, to control the coil-springs and their attachments.

-I claim The combination of the coils a a, bows b b, and loop 0, made of a single wire, with the setscrew d-and the clamp B, with its perforations, all as described.

MANVILL M. MAGDONALD, M. D.

Witnesses:

E. M. WHEELER, D. B KIMBALL. 

